Answer:
1.
[tex]12(1) = 12[/tex]
2.
[tex]2(3) - 7(1) [/tex]
[tex]6 - 7 = - 1[/tex]
3.
[tex] \frac{9( -1)}{3( - 4)} [/tex]
[tex] \frac{ - 9}{ - 12} = \frac{3}{4} \: or \: 0.75[/tex]
4.
[tex]10(1 + 3)^{2} [/tex]
[tex]10(4) ^{2} [/tex]
[tex]10(16) = 160[/tex]
5.
[tex]( { \frac{3(3)}{3(1)} })^{3} [/tex]
[tex]( \frac{9}{3} ) ^{3} [/tex]
[tex] \frac{ {9}^{3} }{ {3}^{3} } = \frac{243}{27} = 9[/tex]
